Combined lock and latch.



D. M. RUSSELL. OOHBINBD LOOK AND LATCH.

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1,037,543. Patented sept. 3, 1912.

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D. M. RUSSELL.

COMBINED L00! AND LATCH. uruonxol-runn n! n. ma.

Patented Sept.. 3,1912.

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COMBINED LOOX AND LATCH.

lpectoatioa of Letten latent.

Patented Sept. 3, 1912.

Application filed Kay 13, 1918. Ierial No. 897,051.

To all whom i't may concern.

Be it known that I, DUNcAN Mawoms Russiiu., a subject of the King of Great llritain, residing at Picton, in the county of liuerfano and tate of Colorado, have invented certain new and useful Improvements in Combined Locks and Latclies, of which the following is a specification, reference being had to the accompanying drawghis invention comprehends certain new and useful improvements in combined locks and latches and the invention has for its primary object a simple and eiiicient construction of lock, the parts of which may be easily manufactured and readily assem led and not liable to get out of o er.

A further object of the invention is an improved construction of lock which will possess the characteristic of safety to a marked degree which will bepractcally imossible to pick or'otherwiee operate except iy the use of a particular ke and by a predetermined manipulation o such key and which will be soconstructed that even if the key which is especially designed for the lock lie inserted therein by a person unacquainted with the combination, his efforts to retract the latch bolt will probably result in sition relative to the lsteh-bo t, theeroll hack bein automatically locked in such position an only capable of being released by a predetermined mani ulation of the key in the operation of wit drawin The invention also has for i object an improved combined latch and lock fordoors, drawers, safes, vaults and the like, which, in one embodiment of the invention, may be easily operated from one sideof the lock casing but incapable of being operated fromthe opposite si e of the loc casin except by ai. me of un peciali dei lay mi a redetermined man ula on thereof. An a still further' obiec of the invention is an im roved construction of, this character prov dedwith meanswhereby the latch bolt may be easily held in retracted position, when desired. Y

With theseiand other objects in"view,=as r. ,fas the'y description proceedcs' the aven onfconsists in certain c onstru ions; arran ents land comblnstions of; the @parte at Ishsll hereinafter the latter.y

tion, reference is to be had to the following description and accompanying drawings in which,

Figure 1 is a face view of my improved lock. Fi 2 is a transverse sectional view thereof. iig. 8 is an inner face view of the casin Fig. 4 is a horizontal section. Figs. 5 an 6 are detail perspective views of the entire key and a portion thereof detached. Fig. 7 is another transverse section. Fi 8 is a perspective view. Fig. 9 is a detail perspect-ive view of the latch bolt. Fig. 10 is a similar view of the key-receiving sleeve, and, Fi .-11 is a detail perspective view of the roll ack.

Corresponding and like parts are referred to in the following description and desir;- natcd in the accompanying drawings by li ce reference characters.I

-Referring to the drawings', the numeral 1 designates the lock casing which is formed in one face with a longtu inally extending slot'or recess 2 for the combinedlatch and look bolt 8, said casing being formed, in the recess 2 with laterally projecting interiorly threaded pins 4 which serve a twofold purpose. These ins are received in longitudirial openings formed in the bolt 8, wliere b'yto p' 'prlyL ide and llimit the movements of, e o t', and'they are interiorly threaded, as just s ecied, so that they may receive fastenin evices to secure the plate 6 to'the main dy portion of the casing, whereby .to properly-house the actuating parte." Within the contracted rear end 7 of the. recess 2, an expgnsion spring 8 is mountcd,-said spring` tiring against the rear or inner en 'of he bolt and tending `to move the bolt fowardl or outwardly into engagement withthe eeper or strike 9. Theforward end of the latch bolt 3 is beveled, whereby it will automaticnll move rearwardl for enpeaement with the keeper.

When t e lock esi ed for use on the door of a room or other inclosure, it is provided with means wherebv it may be easily opened from the inside of the room and also with means whereby the bolt 8 may be easily held inl'retracted position. To accomplish these resulta-the bolt 8 is formed on one side'with a laterally projectingd pin 10 which extends through a longitu inal slot 11 formed vin the casina 1 and which is p'rovided at its protruding extremity with a r knob x12, 4so that by gras in said the'latch bolt may be easiliy slipped f flanged end baclr.. 1 In order to hold the bolt in retracted positron, it is formed in the sidefrom whichx the pin 10 proieets` with a socket or cavity 13 which is designed to spring pressed detentpin 14, said pin workmg in a key-hole sha d slot 15. in thecasing 1 and being rovided with a nib or lug 16 and a knob or nger piece 17.-'4 Obviously, by pulling the pin 14 outwardly until the lug 16 passes out ofthe contracted portionE of the opening 15 and by then turning the: pin to the right orto the left` it ma be held' in its outer ino rative position. hen itl is desired to ho d the bolt 8 in its retracted position, the pin 14 is turned so that its lug 10 will register with the contracted portion of the openin 15, the bolt 8 is shot back by grasping the nger lcnob 12 and the pin 14; is forced by its spring into the socket 18. As soon as the pin 14 is pulled out again, the spring 8 will be ermitted to act to shoot the bolt forward v.

The'bolt 8'is formedin its lower ed signed to accommodate the shouldered portion 19 of a roll back 20. This is securedj to one end ofa transversely extending rod 21, around which a coiled expansion spring- 22 extends, said rin having a tendency to maintain the rol bac -`20 in an o rative relation tof the shouldered recess 1 of the bolt 8 andyieldin when the roll back 20 is pressed lbac y' so'as to movel entirely out of the recess an thus haven'ofoperative' relatio'njto'the bolt. :The purpose of vthis transverse movement .ofsthez roll back 20 and the means for automatically holding'wit in its inoperative relation jto lthe ybolt 81will hereinafter more fully -set fertili-t0n end of the rod 21 is iournaled in "a bearin 28 formed on the outer face of the casin From as muchof the descriptiom as as preceded, in'connection. with the correlated views of the accompanyingdrswin be understood that theL bolt.8 may easily operated `from one side-of ths-casing-bv grasping the Hager' knob'.12,l and .thatt ma also-be rated by* tumingthearoll bac 20 when e latter-is intthe s ouldered recess 18 of the bolt.` Theroll bsoknisde. sifned to be operated by a key from the-side o ie casing opposite to the tin r liob 1% e -ro bac'llcnaind retractiag the bolt will ngow-bs de. Bcn i l ,v il! 'r '4 l l. Secured to theplatsi bylserswslor similar fastenindevicesrpassin .througlsihits 1 ivi! 4dev the means for thus operat ed te dimmi? 'zwitmchf 'ui= sign recevev e,opera n i. or e lockzand -zwhlclrf'registers atfiztisaines .end

, withatherollaba'clcma i Ths-ifouterifend .of

the'sldeve' 2li is interlorlvfserew: threaded, as indicatedi at-Qtgfsndl lserewed da thissend of thesleevefisa vdial ring Mythe y.outstanding evssatwbehriaths meerwaarde@ 1 receive an .inwardly acircularly arranged series of letters. ured .at its outer end within the sleeve 25, is a sprin catch 28 which extends inwardlythroug the sleeve, the inner relatively free end of said spring catch boing .extended.latcral1y, as indicated at 29, to forrn a shoulder adapted to snap over thc roll back 20 when the same is pushed fai' enough inwardly against the tension of its spring 22. The catch 28-is formed intermediate ofits ends with a releasing cain 30 which is movable through a side opening 31 formed in the sleeve 25 and which faces inwardly relative to the sleeve, whereby the catch may lio released from the roll back -20 by the withdrawal of the key in a certain position of the latter. as will be hereinafter specifica" set forth. The key itself einbodies a andle 82 formed with a longitudinally extending opening in which a iinger knob 88 is designed to fit, said knob bcsecured to one end of a threaded pin 34 in whgich-is also mounted in the opening in the with a shouldered recess 18 which'is* e-l finger piece 32. A coiled retracting;` spring 85 is mountedwithin the finger picco 32, and bears against a collar 30 formed on the i in 84. A rod 87` is scoured to the other hrcnded end of the pin 84 and is provided at one end with any desired number and form of fingers 88 desi ned for engagement. 95 inproperl spaced an formed openings 39 lWit ,which thefroll back .20 is provided. The rod 87.is longitudinally-movable in a tubular stem 40'which is secured at one end by seremthreaded 'connection to they finger 100 niece 82', the other end of said tubular stem being thretided, as at:41;- for enga ement .with lthe interiorlv threaded inner ent 42 of the sleeve-25.-. The threaded cnd41 of the 'gum-40, is formednwithx a. laterally` ing lgg 48 whichiis designed to engage the ram oft the catch 28-inva predetermined position of the key ;so.that as the said key is withdrawn,` it will disengage tho catch 28 from theroll back 20and permit the spring 110 22 ottheroll back'to act so as'to automatiprojcctcall `move the mme into operative relation to t ebelt 8. In order that 'this projection 48 ma use ntoand out ofthe sleeve 26m turno :around ini-said sleeve in 115 tbeoperstion ofretracting the bolsa by turningintheroll back 20, the sleeve is formed on .itl terioriwith :two longitudinally extending :and idiamotricallyv 4opposedy grooves 44 and lsformedlatits-inner end with an cn- 12o largcdbore;inwhichrthe projection 43 may turnfaround.. 5 In the ractical operation of my improved combine 'latch'snd 'lockj thelkeyds inserted inth`esleevef26, the' roJectionA sliding in 125 oniofathe' groovesi fandfthe threaded end 41-iof;.the` tubularfstematO of thev key is ongodliwtith the'nterio'i thrcads42' of ,the s eeve, the key beingiturnedi andscrcwed in unti'lga pointer 4Q ltormedionlthehandle `end 15a of the key re 'stersfwith the predetermined letter on the ial.-` When the key is in thisposition, the ins 88 are in line with the openings 89 o the rollback, because the rod 8 is not rotatable within the tubular stein 40, but is only longitudinally movable therein, and consequently, by ressin inwardly upon the nger piece or ob 8 the said pins will be caused to enter the openings 80 and the key then turned in a direction to partially rotate the roll back 20 and eli'ect the retracting of the bolt. Should a person not acquainted with the proper position endeavor to operate the loc by using the key, he would naturally, after inserting the key in the sleeve continue turning the key in screw threaded en agement with the sleeve until the roll bac 20 is pressed back out of the recess 18 and is caught by the catch 28 which holds it in inoperative relation to the bolt 8. Then the operator would be obli d to know how to release the catch before e could operate the lock.' To do this he would have to know just where to turn the key so 'as' to cause the projection 48 to enga the` cam 80 of the catch when the key is bein withdrawn, as otherwise, the catch woul remain inten gement with the roll back and hold the la ter inan inoperatire position. To one who is acquainted with the proper manipilatiomotthe key, this operation` would easy, becausehe would merely turn' the key around until the (pointer .Y

45 registered with the predetermine letter on the dial, when he would lmow that the prcjection 48 was in line withthe cam 80 an that an outward movement of the key would etleet the engagteiiient ot theI rejection with-the cam and retract the'catc from the roll back.

Thus it'will be seen that I-have provided a simple, durable and eihcient construction of combined latch and bolt which poss the characteristic of safety to a marked degrec which is composed of comparatively few parts that magl be oasilymanufactured and readily assem ed and vwhich is so constructed t at an unauthorized attempt to .work the lock. even by. the key designed for it, will, in all probability' result merely in moving the roll back to an inoperative` position with relation to the bolt, when it will be held b the catch 28.

While he accompanvin drawings illustrate what I believe to e preferred embodiment of mv invention, it is to be understood that the invention is not limited thereto,`but that various changes may be made in the construction, arrangementand proportions ot the arts without de artin om the'sco e oft e invention, tiseline in the apnea ed claims.

lThe tubular is ina-de"idetacliable,` so that.' if. ,thr6i'1 h .-unavoidable.secident, la

died at a small cost to the owner. Should the owner desire to change his lock, it is obvious that he can easily do so merely by suostitutin one roll buca for another and changing t ie rod 87 to match the openings of the new roll back.

lVhat I claim is 1. A lock of the character described, including a casing, a latch bolt mounted therein a roll back engageable with the latch bolt to move the latter, a key engageable with said roll back to turn the same, the roll back being movable into an operative relation to the latch bolt` a catch adapted to cngage and hold the rollback in its inoperal ive position, and means for disengagiug the catch from the roll back by and upon tht` withdrawing movement of the key.

2. A lock of the character described, iiicluding a casing, a latch bolt mounted therein, a rollback engageable with the latch bolt to move the latter, a ke engageable with said roll back to turn tie latter, the roll back being movable transverselv oi the movement of the latch bolt, whereby it may be moved to one side of the latch bolt into inoperative relation therewith, and a catch adapted to engage and hold thc roll back in its ino rative ositicn, the key being.,r formed with a proJection designed to (lisenga thepat'ch ,from the roll back in the` with' rawing movement of the key.

8. A lock of the character described, includinq a casing, atlatch bolt movable therein, a ro l back engageable with the latch belt and movable transversely of the movement o! the latch bolt, the roll back being formed with a indie extending transversely of the casing, t e easingl being formed with a bearing for said spin le, a spring encircling said spindle and bearing a ainst the roll back in a direction to move t e same automatically into operative relation with the latch bolt.,

and a catch engageable with the roll back to hold it to one side of the latch bolt upon the'movement of the roll back ii a direction against the tension of the spring.

4. A lock of the character described, including a casing, a latch bolt movable therein a' roll back engageable with said latch bOlt, a sleeve secured to said casiiig iii registry with the roll back, the sleeve )ein v provided with a dial and with longitin inally di osed interior ooves leading toward thc rol back, the rol back being movable in a direction transverse to the movement of the latch bolt, means within the casing engagin the roll back and tending to move it in o o erative relationto the latch bolt and towa the sleeve, a key adapted for inscrtion in said sleeve intoengagement with the roll-baekthe ke bein formed with a proit against the tensionof the spring to one side of the latch bolt, said catch being engageable with the projection of the key, for the urpose of releasing the catch from the roll ac 5. A lock of the character described, incliiding a casing, a latch bolt movable therein, a roll back engageable with the latch bolt to retract the latter, the roll back being movable in a lane transverse to the movement of the atch bolt, means tending to more the roll back outwardly in the casing into operative relation with the latch bolt, a sleeve secured to the casiniein registry with the roll back, said sleeve ing formed :it its inner ends with interior screw threads a key insertble in the sleeve and forme with threads for engagement with the screw threads of thc sleeve and with means for engagement with the roll back to turn the latter, a catch member in the casing and adapted to engage the roll back to hold it out of line with the latch bolt said catch being secured to the sleeve and ormed with an intermediate cam portion and the key being formed with a projection en geable with the cam portion, whereby to re ease the catch from the roll back'.

6. A lock of the character described, in-

cluding a. casing, a latch bolt movable therein, a roll back engageable with the latch bolt to retract the latter, the roll back being movable in a plane transverse to the movement of the latch bolt, a spring mounted in the easing and engaging said roll haek and havin a tension thereon to move the roll back into operative relation with the latch bolt, a catch secured in the casing and adapted to engage and hold the roll back 1i 0n the movement of the latter out of a inement with the latch bolt, a sleeve secured to the casing and in registry with the rollback, a key insertble in said sleeve and formed with pins for engagement with the roll back and with a rojection, the sleeve and key being threased for engagement with each other, the projection of the key bein adapted to release the catch from the roll ack, and a spring pressed rod included in the key and carrying said pins, for the purpose specified.

In testimony whereof I hereunto atlix my signature int-he presence of two witnesses.

DUNCAN MALCOLM RUSSELL.

Witnesses WILLIAM MCLENNAN, JOHN NniLsoN.

Copies et this patent may be obtained for Ive peut: elch, by addressing the Commissioner of Patents,

' Wuhtaztemn. 

